XD i think the bowls i got were too thick when i made swyvel because there was no way any razor blade could go through them.. I had to BURN out the eyeholes with a lighter.. which was stinky... and then carve them to a circular shape which too forever.. and when i tried to cut them out of the bowl the bowl kept cracking in random areas while i was cutting them out (with heavy duty scissors) it also took me forever to cut them out because the bowl was so hard...

so yeah... don't get bowls at the $1 store in redwood city, CA... THEY ARE EVIL. XD

For the eyes for the mask pictured in the tutorial, I had it so the bowl's curve was at the top of my eyes. I've also oriented it so the curve of the bowls is to the left or right edge of the eyes (like on my Treever costume, where his eyes are more squinty, and so they curve more around his face)I added a little section to the tutorial that says: "Use the curve of the bowls to your advantage, try to match up the curve with the shape of the face of your mask."